How do you know it was a Google address if you do not know the Class B part of the address?
I guess they no longer use the “Class” system and have switched to Classless Inter-Domain Routing (CIDR) which I know nothing about.
Because I had only one site up, our own. and when I copy and pasted a Youtube link into another tab it kicked me out because it detected the New IP address. Simultaneously I got a cross site warning from NoScript about Youtube by name trying to identify.
There was no other source it could be. I had just cleared my cache and had only logged into our own site. NoScript straight up told me the source. I repeated it two more times with the exact same conditions with the same results.